蛇妖星雲 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "蛇妖星雲" in Chinese language version.

refsWebsite

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2web.archive.org

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harvard.edu

ui.adsabs.harvard.edu

Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; et al. 2MASS All Sky Catalog of point sources. The IRSA 2MASS All-Sky Point Source Catalog, NASA/IPAC Infrared Science Archive. 2003 June. Bibcode:2003tmc..book.....C. 请检查|date=中的日期值 (帮助)
Lozinskaya, T. A. Interferometry of the Medusa Nebula A21 (YM 29). Soviet Astronomy (PDF) (ADS). 1973, June, 16: p.945. Bibcode:1973SvA....16..945L. 请检查|date=中的日期值 (帮助)

nasa.gov

antwrp.gsfc.nasa.gov

Robert Nemiroff (MTU) & Jerry Bonnell (USRA). The Medusa Nebula. Today's Astronomy Picture of the Day. 12 June 2010 [2010-07-01]. （原始内容存档于2010-07-07）.

u-strasbg.fr

simbad.u-strasbg.fr

MEDUSA -- Planetary Nebula. Centre de Données astronomiques de Strasbourg. [2010-07-01]. （原始内容存档于2017-05-20）.

web.archive.org

MEDUSA -- Planetary Nebula. Centre de Données astronomiques de Strasbourg. [2010-07-01]. （原始内容存档于2017-05-20）.
Robert Nemiroff (MTU) & Jerry Bonnell (USRA). The Medusa Nebula. Today's Astronomy Picture of the Day. 12 June 2010 [2010-07-01]. （原始内容存档于2010-07-07）.